# SEC 13F Holdings Lookup

> SEC 13F Holdings Lookup is a paid API for AI agents from agent-data-tools.revmesh2074.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-26).

Returns the latest quarterly 13F-HR institutional holdings from SEC EDGAR for a named fund manager or CIK, including each position's issuer, CUSIP, USD value, shares, and portfolio weight.

## Facts

- Endpoint: GET https://agent-data-tools.revmesh2074.workers.dev/sec/13f?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-26
- Activations on Zero: 0
- Provider: agent-data-tools.revmesh2074.workers.dev
- Website: https://agent-data-tools.revmesh2074.workers.dev
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-data-tools-revmesh2074-workers-dev-sec-13f-holdings-lookup-5b4ec4fe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GUfiemUxU4jcbU6yFmRgs

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agent-data-tools-revmesh2074-workers-dev-sec-13f-holdings-lookup-5b4ec4fe
```

Example prompt: Show me the top 50 positions in Berkshire Hathaway's latest 13F filing — I want each stock's issuer, value in USD, and portfolio weight.

## When to prefer this

Use this endpoint when you need structured, per-position institutional holdings data directly from SEC EDGAR 13F-HR filings. It is ideal when you know the fund manager's name or CIK and want the most recent quarterly snapshot of what equities they hold. Prefer this over web scraping or financial data aggregators when you need authoritative regulatory filings with CUSIP identifiers and exact share counts.

## Known failure modes

- Fund name not found on EDGAR — try providing the CIK directly
- CIK does not correspond to a 13F filer — manager may not be required to file
- No 13F filed yet for the current quarter — data lags up to 45 days after quarter end
- Ambiguous fund name matching multiple filers — use CIK for precision
- limit parameter out of range (must be 1–200)

## How this service works

13F holdings, fund holdings. The latest 13F-HR holdings of an institutional investment manager (hedge fund, mutual fund family, bank) from SEC EDGAR: each position's issuer, class, CUSIP, value in USD, shares and portfolio weight, largest first, plus the report period, total value and position count. Give the filer by name (e.g. Berkshire Hathaway) or CIK. Public SEC data, filed quarterly up to 45 days after the quarter. Use to see what a fund owns.

## Output

Returns a JSON object with the filer's name, CIK, SEC filing URL, form type, filing date, report period, and an array of holdings sorted by USD value descending. Each holding includes the issuer name, share class, CUSIP, number of shares, market value in USD, portfolio weight as a percentage, and optionally whether the position is a put or call. Also includes total portfolio value and total position count.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "cik": {
       "type": "string",
       "examples": [
        "1067983"
       ],
       "description": "The filer's SEC CIK, e.g. 1067983 (instead of filer)"
      },
      "filer": {
       "type": "string",
       "examples": [
        "Berkshire Hathaway"
       ],
       "description": "Fund manager's name, e.g. Berkshire Hathaway (or give cik)"
      },
      "limit": {
       "type": "string",
       "examples": [
        "25"
       ],
       "description": "Positions to return, 1-200 (default 25)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "cik": {
       "type": "string"
      },
      "url": {
       "type": "string"
      },
      "form": {
       "type": "string"
      },
      "filed": {
       "type": "string"
      },
      "filer": {
       "type": "string"
      },
      "period": {
       "type": "string"
      },
      "source": {
       "type": "string"
      },
      "holdings": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "class": {
          "type": "string"
         },
         "cusip": {
          "type": "string"
         },
         "issuer": {
          "type": "string"
         },
         "shares": {
          "type": "number"
         },
         "putCall": {},
         "valueUsd": {
          "type": "number"
         },
         "weightPct": {
          "type": "number"
         }
        }
       }
      },
      "positions": {
       "type": "number"
      },
      "totalValueUsd": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "cik": "0001067983",
  "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526352200/",
  "form": "13F-HR",
  "filed": "2026-08-14",
  "filer": "BERKSHIRE HATHAWAY INC",
  "period": "2026-06-30",
  "source": "SEC EDGAR (public information)",
  "holdings": [
   {
    "class": "COM",
    "cusip": "037833100",
    "issuer": "APPLE INC",
    "shares": 280000000,
    "putCall": null,
    "valueUsd": 57400000000,
    "weightPct": 22.29
   }
  ],
  "positions": 41,
  "totalValueUsd": 257500000000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-data-tools-revmesh2074-workers-dev-sec-13f-holdings-lookup-5b4ec4fe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-data-tools.revmesh2074.workers.dev](https://www.zero.xyz/host/agent-data-tools.revmesh2074.workers.dev/llms.txt)